Texas Instruments FDC2x1x 28/12 位电容数字转换器
德州仪器 FDC2x1x 28 或 12 位电容数字转换器是面向电容式传感解决方案的抗噪声和抗 EMI、高分辨率、高速、多通道电容数字转换器系列。这些器件采用基于窄带的创新型架构，可对噪声和干扰进行高度抑制，同时在高速条件下提供高分辨率。FDC221x 经过优化具有达 28 位的高分辨率。FDC211x 提供高达 13.3ksps 的采样速率，可轻松实现采用快速移动目标的应用。最大输出电容达 250nF ，可以采用远程传感器以及追踪环境因素随时间、温度和湿度发生的改变。
特性
- EMI-resistant architecture
- Maximum output rates (one active channel)
- 13.3ksps (FDC2112, FDC2114)
- 4.08ksps (FDC2212, FDC2214)
- 250nF (at 10kHz with 1mH inductor) maximum input capacitance range
- 10kHz to 10MHz sensor excitation frequency range
- Number of channels: 2, 4
- Up to 28 bits of resolution
- 0.3fF at 100sps system noise floor
- 2.7V to 3.6V supply voltage range
- 2.1mA active power consumption
- 35µA low-power sleep mode
- 200nA shutdown rating
- I2C interface
- -40°C to +125°C temperature range
应用
- Proximity sensor
- Gesture recognition
- Level sensor for liquids, including conductive ones such as detergent, soap, and ink
- Collision avoidance
- Rain, fog, ice, and snow sensor
- Automotive door and kick sensors
- Material size detection
视频
Learn More About
- Sensor Resources
- Sensing Technologies
- White Paper: Sensing the World More Accurately
- Texas Instruments Sensing Solutions
- Noise-immune Capacitive Proximity Sensor System
- Low-Power Touch Through Glass
- High Temperature Touch Through Glass
- Robust, High Res Capacitive Touch & Proximity Sensing User Interface (UI) w/LED Lighting
Functional Block Diagram
Development Tool
Texas Instruments FDC2x14EVM 评估模块（EVM）
展示如何使用电容式传感技术来检测任何目标物体。
发布日期: 2015-08-25
| 更新日期: 2025-09-11